WO2000071070A1 - Procede et dispositif de levage de charges - Google Patents

Procede et dispositif de levage de charges Download PDF

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Publication number
WO2000071070A1
WO2000071070A1 PCT/GB2000/001850 GB0001850W WO0071070A1 WO 2000071070 A1 WO2000071070 A1 WO 2000071070A1 GB 0001850 W GB0001850 W GB 0001850W WO 0071070 A1 WO0071070 A1 WO 0071070A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
cellular
air
cellular body
load
Prior art date
Application number
PCT/GB2000/001850
Other languages
English (en)
Inventor
Thomas Matthew Caveney
Original Assignee
Stafford Rubber Company Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10853737&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2000071070(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stafford Rubber Company Limited filed Critical Stafford Rubber Company Limited
Publication of WO2000071070A1 publication Critical patent/WO2000071070A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1021—Inflatable cushions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A61G2200/32—Specific positions of the patient lying

Definitions

  • This invention relates to a method of raising loads and to a device for use in that method.
  • it relates to a method and device for use in raising hospital and other patients, for example from floor level to the level of a bed or trolley or from normal bed level to a higher level to facilitate movement of the patient by hospital staff .
  • the present invention provides a method and device for use therein which overcome the problem referred to above.
  • a method of raising patients and other loads by use of a reversibly expandable cellular body of resilient material, in which the cellular body, in a collapsed or deflated condition, is located under the load and expanded in at least a vertical direction so as to exert an upwards force on the load and thereby raise it in a vertical direction.
  • the present invention provides a device for use in the method of said first aspect of the invention, which comprises : a reversibly expandable cellular body of resilient material which is in a deflated but expandable condition wherein all or a substantial proportion of air has been expelled from the cells of the material;
  • a container in which the cellular body is encased the dimensions of the container being such that the container can accommodate the cellular body when said body is in an expanded condition
  • the term "body” also includes two, three, four or more pieces of cellular material, whether or not contiguous and whether or not composed of the same or similar material. If desired, the "body” can be comprised of a mass of plastics material in granular, crumb or other comminuted form.
  • the cellular material used in the present invention should permit ready egress of air from, and ingress of air into, voids in the material. This requirement is well satisfied by the use of an open-cell foam in which at least a substantial proportion of the cells interconnect with adjacent cells. However, if desired, the voids in the cellular material can be of a size greater than that normally attributed to open-cell foam. Where an open-cell foam is used, its density should be such that, in a desired expanded condition, it is sufficiently strong to support the weight of the patient or other load and permit the necessary ingress and egress of air referred to above.
  • Polyurethane foam is an excellent material for use in this invention.
  • a suitable open-cell polyurethane foam is one having a density in the range 18 to 45 kg/m3, for example 20, 25, 30, 35 or 40 kg/m3.
  • the shape of the member or members composing the cellular body is usually not critical .
  • the overall shape of the body is rectangular and can be composed, for example, of a single rectangular block or of two or more blocks of square or other rectangular shape or of triangular shape.
  • the latter can be provided with channels of a cross-section substantially greater than the size of the cells of the cellular body, the channels extending from an exterior surface of the body into its interior.
  • These channels can be in any convenient disposition within the body, for example extending in the general direction in which the body, in use, expands and contracts.
  • the device of the present invention could be one intended only for a single use, it is much more preferable for it to be one suitable for multiple, successive uses and, in that event, it is necessary for the cellular body to be deflated after use so as to put it in a condition for subsequent use and/or storage.
  • the expanded device can be deflated by various means, for example by applying a vacuum to the interior of the container thereby to draw out air or by applying pressure to the block. Removal of the air under suction can be effected, for example, by use of a vacuum cylinder or by means of a venturi arrangement using a jet of compressed air.
  • the device can be in a very simple form in which the cellular body, encased in a deflated condition in the container, is expanded simply by piercing the container thereby to allow the ingress of air into the container and into the voids in the cellular material . In this arrangement the container needs no valve.
  • the device in the more general form of the invention, intended for multiple, successive uses, it is necessary for the device to be provided with means which keep the cellular material in a deflated form either prior to its next use or during storage. This can be effected, for example, by providing the container with one or more valves which at least prevent unwanted ingress of air into the container.
  • valves can take any convenient form.
  • the means to prevent ingress of air into the container can be a patch or like member applied to the exterior of the container so as to cover an aperture or apertures through which air has been extracted to deflate the cellular material.
  • simple removal of the patch or like member permits air to flow through the container and into the cellular material .
  • the flexible container can be secured to, or be integral with, at least part of the body of cellular material, for example the surface or surfaces that, in use, constitute the bottom and/or top of that body.
  • the bottom surface of the cellular body or the bottom surface of the container can be secured, by means of bonding or otherwise, to a base sheet, board or other base member whose shape and dimensions conveniently correspond to the bottom of the cellular body.
  • This base member can protect the bottom of the cellular body
  • flexible container includes, but is not limited to, a container whose flexibility is provided by its side region and whose bottom and/or top is substantially inflexible.
  • FIGURE 1 is a top view of the device in a deflated condi ion
  • FIGURE 2 is an end view of the device in the deflated condition shown in Fig. 1;
  • FIGURE 3 is a perspective view of the device in an expanded condition
  • FIGURE 4 is a front view of the device in the expanded condition shown in Figure 3 ;
  • FIGURE 5 is a top view of the device in the expanded condition shown in Figure 3.
  • FIGURE 6 is an end view of the device in the expanded condition shown in Fig. 3.
  • the device comprises a body of open-cell polyurethane foam having a density of 35kg/m , a flexible, air-tight container in the form of a bag formed from sheets of reinforced PVC, the sheets being secured together by welded seams, and valves located in opposed end portions of the bag.
  • the foam body is an elongate block having a length of 1800 mm, a width of 600mm and a depth of 600mm; and the foam is an open-cell polyurethane foam obtained from British Vita Ltd under trade mark CALIGEN (Grade XE22 FR) .
  • CALIGEN is a Trade Mark. Properties of CALIGEN Grade XE22 FR are shown below under the heading "Preferred embodiment” . A wider range of suitable properties of open cell polyurethane foam is shown under the heading "Range" .
  • the PVC is a medical grade containing an anti-microbial agent which provides protection against bacterial and fungal attack, obtained from Flexible Reinforcements Ltd under trade mark Bondwave grade NFl/103 TS, supplied in lengths having a width of 1270mm. Bondwave is a Trade Mark.
  • This PVC product has the following physical properties: TABLE II:
  • the burst strength of Bondwave NF1/103TS is at least 620 kN/m as measured according to BS 3424, Part 6, Method 8B.
  • the block (10) is in a deflated condition in which all, or at least a substantial proportion, of the air has been expelled from the open cells of the foam.
  • the container comprises upper and lower walls (11,12) which conform substantially and are in contact with, or closely adjacent, the upper and lower, substantially parallel, surfaces of the foam block.
  • the upper and lower walls of the container extend, respectively, outwardly and meet at edge portions. (13,14).
  • Valves (17,18,19,20) provide a means by which air can be allowed to enter the container and/or be expelled from the container.
  • the valves each have an inlet and an outlet function, that is, they are adapted both to permit the ingress of air into the container and to permit egress of air from the container; in an alternative form some of the valves can be inlet valves and some can be outlet valves .
  • Figure 3 is a perspective view in which the foam block is in an expanded condition and substantially entirely fills the container.
  • the container closely conforms to the shape of the expanded block which has expanded in an upward direction.
  • the thickness of the polyurethane block is typically in the range 40 to 70 (for example 50 to 60) mm.
  • the width and length of the block are substantially the same as when the block is in its fully expanded condition, that is a length of about 1800 mm and a width and depth of about 600 mm.
  • Figures 4, 5 and 6 show respectively front view, plan and end view of the device where the block is a fully expanded condition, and they correspond to the perspective view shown in Figure 3.
  • the device in the deflated condition illustrated in Figures 1 and 2, is laid on the floor at a location where it is wished to raise the patient.
  • the patient is then placed on the upper surface (11) of the container, care being taken that the extension portions (13,14) are not trapped beneath the patient and thereby inoperative .
  • ambient air is allowed to enter the container through the inlet valve or valves, the air thereby flowing into the open cells of the foam and causing the foam to expand, especially in an upwards direction.
  • the container extension portions (13,14) are drawn inwardly so that the container as a whole accommodates the increasing height of the foam.
  • the upwards expansion of the foam is usually limited by the maximum height of the container available after the slack provided by the extension portions (13,14) has been taken up.
  • the device is then substantially in the condition illustrated in Figure 3 of the drawings.
  • the dimensions of the device are such that, on expansion of the foam the upper surface of the device can be raised to a height permitting easy transfer of the patient from the device to a desired new location such as a bed or trolley.
  • This contraction can be effected, for example, by deflating the bag, for example by use of a probe and vortex to remove the air from the foam and bag through the outlet valve or valves . Once the air has been removed the valve or valves are closed and the device then remains in a collapsed condition. Alternatively, the air can be evacuated from the container by vacuum means . Another way of evacuating the device is by applying a compressive force thereby to reduce the operating height of the foam by a requisite amount. Of course, whichever method is used to evacuate the device it is necessary to prevent subsequent accidental ingress of air into the device, for example by closing the inlet valve or valves .
  • the device of the present invention has the advantages of being simple to use, having no mechanical moving parts, being of light weight and, in its deflated condition, occupying a small volume facilitating storage, either flat or rolled into a coil .

Abstract

L'invention concerne un procédé permettant de soulever un patient (ou autre charge). Il consiste à utiliser un corps alvéolaire expansible dans un état au moins partiellement dégonflé ou affaissé, à le placer sous la charge et à le gonfler au moins dans une direction verticale de façon à exercer sur la charge une force vers le haut la soulevant verticalement. De façon appropriée, le procédé utilise un dispositif qui comprend un corps (10) alvéolaire expansible (par exemple une mousse en polyuréthanne à alvéoles ouverts) en un état au moins partiellement dégonflé ou affaissé; des moyens (12, 12, 13, 14) empêchant une entrée d'air non voulue dans le corps (10) alvéolaire; et des moyens (17, 18, 19, 20) qui permettent, en emploi, l'entrée d'air dans le corps alvéolaire lorsque ladite charge est soutenue par le dispositif, la charge se trouvant ainsi soulevée.
PCT/GB2000/001850 1999-05-20 2000-05-12 Procede et dispositif de levage de charges WO2000071070A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9911627A GB2350099A (en) 1999-05-20 1999-05-20 Method and device for raising loads
GB9911627.9 1999-05-20

Publications (1)

Publication Number Publication Date
WO2000071070A1 true WO2000071070A1 (fr) 2000-11-30

Family

ID=10853737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/001850 WO2000071070A1 (fr) 1999-05-20 2000-05-12 Procede et dispositif de levage de charges

Country Status (2)

Country Link
GB (2) GB2350099A (fr)
WO (1) WO2000071070A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2359063A (en) * 2000-01-08 2001-08-15 Philip Walter Strong Load handling apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864766A (en) * 1973-10-01 1975-02-11 Ancra Corp Self-adjusting contour pillow
US3872525A (en) * 1972-01-10 1975-03-25 James M Lea Inflatable foam pad
US5117517A (en) * 1991-08-13 1992-06-02 Su Ping Hung Self inflating camping mattress
FR2731902A1 (fr) * 1995-03-22 1996-09-27 Camus Michel Dispositif de calage d'un corps lors d'une intervention chirurgicale

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1529671A (fr) * 1967-03-23 1968-06-21 Coussin auto-gonflable et auto-amorti
US3877092A (en) * 1974-05-02 1975-04-15 Gaiser Enterprises Inc Self inflatable air mattress, and sleeping bag with air pressure control
US4371997A (en) * 1980-08-25 1983-02-08 Mattson Roy D Adjustable firmness cushion with multiple layered foam-filled compartments
GB9309380D0 (en) * 1993-05-06 1993-06-16 Dampsey Joseph P Packaging and other constructions
CA2100183A1 (fr) * 1993-07-07 1995-01-08 Bill B. Culp Matelas d'air auto-gonflable
US5669086A (en) * 1994-07-09 1997-09-23 Mangar International Limited Inflatable medical lifting devices
GB2300845A (en) * 1995-05-13 1996-11-20 Mangar International Ltd Apparatus for Assisting the Movement of Disabled Persons
JPH10248882A (ja) * 1997-03-11 1998-09-22 Okamoto Ind Inc ベッド装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872525A (en) * 1972-01-10 1975-03-25 James M Lea Inflatable foam pad
US3864766A (en) * 1973-10-01 1975-02-11 Ancra Corp Self-adjusting contour pillow
US5117517A (en) * 1991-08-13 1992-06-02 Su Ping Hung Self inflating camping mattress
FR2731902A1 (fr) * 1995-03-22 1996-09-27 Camus Michel Dispositif de calage d'un corps lors d'une intervention chirurgicale

Also Published As

Publication number Publication date
GB2377214A (en) 2003-01-08
GB9911627D0 (en) 1999-07-21
GB2350099A (en) 2000-11-22
GB0221213D0 (en) 2002-10-23

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